Authorities told KPIX 5 the teen has been identified as Ivan Diaz Amezcua.

Investigators concluded that Tharp had stabbed the teen during a fight. Tharp was also taken to Valley Medical Center and treated for his injuries, then was booked into jail on suspicion of murder, police said.

Anyone with information about the killing is asked to call Campbell police Sgt. Gary Berg at (408) 871-5190.